Question

The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint is 3:1.

Part A: Write a sentence to describe the number of cups of blue paint that Lara mixed with each cup of red paint. (4 points)

Part B: How many cups of red paint should Lara add to each cup of blue paint to make the shade of purple? Explain your reasoning. (4 points)

Part C: If Lara purchased 6 cups of blue paint for $48, what is the unit price per cup of blue paint? (2 points)

Answer 1

@moudown828 @triciaal @welshfella

Answer 2

ratio is 3:1, so for every 1 cup of red she added 3 blue

Answer 3

that answers a and b, and to get c you divide 48 by 6, which is $8

Answer 4

b asks how many cups of red paint must be added to 1 cup of blue paint to make purple paint.

The answer to that is since the ratio of blue to red is 3:1 then the ration of red to blue is 1:3. So for each cup of blue you ad 1/3 of a cup of red.

Answer 5

ooops sorry thats 1/4 of a cup of red.

Answer 6

! : 3 = 1/4 : 3/4

Answer 7

no its 1/3
sorry i didnt understand the question

Answer 8

Not 1/3 because that would make the ratio 1/3 to 2/3 which is 1 to 2.

Answer 9

@welshfella its one third cup, because 3:1 simplifies to 1: 1/3

Answer 10

lol

Answer 11

lets see who right @ganeshie8

Answer 12

think about it there are 4 parts in 1:3
so if the whole is 1 then 1 is equivalent to 1.4 and the 3 is equivalent to 3/4

Answer 13

* 1/4

Answer 14

hold on let me ask google. he knows everything

Answer 15

@Michele_Laino can you help us out here?